RAC 4.1-300-460-L00-W1 Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
MPN: R911252351
No Tariffs On US Orders- Straightforward Pricing: No Rush Fees, No Credit Card Fees
The Bosch Rexroth Indramat RAC 4.1-300-460-L00-W1 is an AC Main Spindle Drive Controller from the RAC Spindle Drive Controllers series. It operates with a rated connection voltage of 3 x AC 400 V at 50 Hz or 3 x AC 460 V, and provides a rated current of 300 Amps. The controller features internal blower cooling and uses a SERCOS interface for speed command.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The RAC 4.1-300-460-L00-W1 is an AC spindle drive controller produced by Bosch Rexroth Indramat for the RAC Spindle Drive Controllers series. As the link between a CNC system and a high-speed spindle motor, it regulates torque and speed to maintain machining accuracy during drilling, milling, or grinding operations. It is intended for machine tools that require stable spindle operation under changing cutting loads. This type of control helps the spindle hold the commanded speed when material removal conditions change during a machining cycle.
The controller operates from a three-phase AC input of 3 × AC 400 V or 3 × AC 460 V, so it can be connected to 50 Hz or 60 Hz power systems within a ±15% tolerance band. This makes it suitable for installations that use either standard 400 V plant power or 460 V machine supplies. A continuous output of 300 A gives the connected spindle high starting and cutting current without an external current booster. Thermal energy is removed by a built-in fan, which helps prevent heat buildup inside the cabinet. Command and diagnostic data reach the drive through X4 optical waveguides, which provide noise-immune transmission in electrically harsh environments. The unit comes without an additional encoder input, so applications that use only the main motor encoder do not require an extra feedback card.
Velocity setpoints are delivered through the SERCOS interface, allowing deterministic control cycles within multi-axis systems. That arrangement supports synchronized spindle control with other machine motions during complex operating sequences. The unit is classified as an AC Main Spindle Drive Controller, so its current loop response and acceleration behavior are suited to direct spindle service rather than feed-axis duty. It is supplied without an additional bleeder, so regenerative energy is handled by the standard internal resistor or routed to a common DC bus. The hardware belongs to Series 4, and the unit uses Version 1.
Frequently Asked Questions about RAC 4.1-300-460-L00-W1:
Q: How is the RAC 4.1-300-460-L00-W1 spindle drive controller cooled?
A: The RAC 4.1-300-460-L00-W1 features internal blower cooling with a built-in fan for airflow management during operation.
Q: What voltage does the RAC 4.1-300-460-L00-W1 support for its main power connection?
A: This spindle drive controller has a rated connection voltage of 3 x AC 400 V at 50 Hz, ±15%, or 3 x AC 460 V.
Q: What is the rated current of the RAC 4.1-300-460-L00-W1?
A: The rated current for the RAC 4.1-300-460-L00-W1 is 300 amps, supporting high power applications.
Q: What interface is used for speed command on the RAC 4.1-300-460-L00-W1?
A: The speed command for this unit is managed via the SERCOS interface.
Q: Which interface terminal is provided for connectivity on the RAC 4.1-300-460-L00-W1?
A: The optical waveguides interface terminal on this unit is designated as X4.
